138 BRITISH FOSSIL VERTEBRATA. 



OXYSKINA mantelli {continued)— 



1835) ; F. Dixon, Geol. Sussex, 1850, descr. to pi. xxx, f. 19 ; 

 J. Morris, Cat. Brit. Foss., 1854, p. 331. [Teeth ; Brit. Mus.] 

 LOC. U. Greensand ; Dorsetshire and Somersetshire. Chloritic 

 Marl ; Ventnor, I. of Wight. Cambridge Greensand. Chalk ; 

 Sussex, Surrey, Kent, and Essex. [Teeth ; Brit. Mus.] 



paradoxa, Agassiz. v. Hybodus striatulus. 

 plicatilis, Agassiz. v. Oxyrhina hastalis. 

 quadrans, Agassiz. v. Oxyrhina hastalis. 

 retroflexa, Agassiz. ?'. Oxyrhina hastalis. 

 triffonodotl, Agassiz. v. Oxyrhina hastalis. 

 xiphodon. Agassiz. v. Oxyrhina hastalis. 



PACHYCEPHALIAS, L. Agassiz, Poiss. Foss., vol. v, pt. ii (1843), 



p. 139 (name only), and Rep. Brit. Assoc, 1844 (1845), P- 3°8 



(name only). 



cristatus, L. Agassiz, ibid., p. 139 (name only), and ibid., p. 308 



(name only). 



LOC. London Clay ; Sheppey. [Imperfect head ; Brit. Mus.] T. 



PACHYCORMUS. L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), 

 p. 1 10. 

 ficiftirostris, L. Agassiz, ibid., p. 114 (undefined). 

 LOC. U. Lias ; Whitby. 



branchialis (Agassiz, MS.), J. Morris, Cat. Brit. Foss., 1854, 

 p. 336 (name only). 

 LOC. L. Lias ; Lyme Regis. [Fish ; Brit. Mus.] 



curtus. L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), P- 1 12 > pi- ^ x 5 

 J. Morris, Cat. Brit. Foss., 1854, p. 336. 

 LOC. U. Lias ; Whitby. [Fishes ; Brit. Mus. and Scarborough 

 Mus.] 



gracilis, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), p. Ir 4 (unde- 

 fined). 

 Urceus gracilis, L. Agassiz, Neues Jahrb., 1832, p. 142 (name 



only). 

 LOC. U. Lias ; Whitby. 



heterurus, L. Agassiz. Poiss. Foss., vol. ii, pt. ii (1843), p. 113, 

 pi. Iviiia, f. 4, 5 ; J. Morris, Cat. Brit. Foss., 1854, p. 336. 

 LOC. L. Lias ; Lyme Regis. [Tail ; Oxford Mus.] 



latipennis, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), p. 114 

 (undefined) ; J. Morris, Cat. Brit. Foss., 1854, p. 336 ; 

 P. M. G. Egerton, Figs, and Descript. Brit. Organic Remains, 

 dec. ix (Mem. Geol. Surv., 1858), no. 3, pi. iii. 

 LOC L. Lias ; Lyme Regis. [Head, pectoral fin, scales; Brit. 

 Mus.] 



